package org.nutz.plugins.view.smarty;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.lilystudio.smarty4j.Context;
import org.lilystudio.smarty4j.Engine;
import org.lilystudio.smarty4j.Template;
import org.nutz.lang.Files;
import org.nutz.lang.Strings;
import org.nutz.mvc.Mvcs;
import org.nutz.mvc.view.AbstractPathView;
/**
* 使用 Smarty4j 模板生成页面
*
* @author QinerG(QinerG@gmail.com)
*/
public class SmartyView extends AbstractPathView {
private final String ext = ".html";
private static Engine engine = new Engine();// 加载模板引擎
public SmartyView(String dest) {
super(dest);
engine.setTemplatePath("");
}
/*
* 渲染页面
*
* @see org.nutz.mvc.View#render(javax.servlet.http.HttpServletRequest,
* javax.servlet.http.HttpServletResponse, java.lang.Object)
*/
public void render(HttpServletRequest req, HttpServletResponse resp, Object obj)
throws Throwable {
if ("".equals(engine.getTemplatePath())) {
String realPath = req.getSession().getServletContext().getRealPath("/");
engine.setTemplatePath(realPath);
}
String path = evalPath(req, obj);
// 空路径，采用默认规则
if (Strings.isBlank(path)) {
path = Mvcs.getRequestPath(req);
path = "WEB-INF" + (path.startsWith("/") ? "" : "/") + Files.renameSuffix(path, ext);
}
// 绝对路径 : 以 '/' 开头的路径不增加 '/WEB-INF'
else if (path.charAt(0) == '/') {
if (!path.toLowerCase().endsWith(ext))
path += ext;
}
// 包名形式的路径
else {
path = "WEB-INF/" + path.replace('.', '/') + ext;
}
Template template = engine.getTemplate(path);
Context ctx = new Context(); // 生成数据容器对象
ctx.set("obj", obj);
ctx.set("request", req);
ctx.set("base", req.getAttribute("base"));
ctx.set("session", req.getSession());
template.merge(ctx, resp.getWriter());
}
}